Support TypeConverters when parsing CSV to entity via annotation

[mklueh]

Currently, only entity fields of type String will be parsed when using a parsing object with annotations. Should be possible to cover default types and add custom type converters based on column name, or specified in the annotation.

Global .withTypeConverter function should remain, but declaring converters on annotation level makes sense if there are different formattings of the same date type in one file for example.

Evaluation if .withTypeConverter makes sense for parsing as well, which should as we can match against the type of the field related to the column name.